| Vendor | Spec | Unit | Price | Currency | Date |
| Baozhen Shandong Chem | China national standards | MT | 961.01 | USD | 20251201 |
| WENTONG Potassium | China national standards | MT | 1031.67 | USD | 20251201 |
| Pingxiang Lixin BioTech | China national standards | MT | 1074.07 | USD | 20251201 |
| Xiangyang Youdeshi Chem | China national standards | MT | 1003.41 | USD | 20251201 |
| WENTONG Potassium | China national standards | MT | 1088.2 | USD | 20251201 |
| Shandong Yushuo Chem | China national standards | MT | 961.01 | USD | 20251201 |
| Hubei 789 Chem | China national standards | MT | 777.29 | USD | 20251201 |
| Beijing WentongTech | China national standards | MT | 1088.2 | USD | 20251201 |
| Hubei 789 Chem | China national standards | MT | 777.29 | USD | 20251201 |
| Hunan Lixin Tech | China national standards | MT | 1017.54 | USD | 20251201 |